Table 1.
Demographic data for 61 patients with unilateral congenital aural atresia combined with microtia
| Variable | Value |
|---|---|
| Age (yr) | 15.4±9.6 |
| Female:male | 39:22 |
| Anomaly side (right:left) | 39:22 |
| Jahrsdoerfer score | 8.5±2.3 |
| Marx grade | 2.7±0.6 |
| Extent of the inferior displacement of the mastoid tegmen (%) | |
| Pathologic side | 28.9±16.8* |
| Unaffected side | 17.3±11.2 |
| Pure tone audiometry (dB) | |
| AC, pathologic side | 69.6±13.1*** |
| BC, pathologic side | 10.6±11.7 |
| AC, unaffected side | 11.1±10.1 |
| BC, unaffected side | 7.1±10.9 |
| ABG, pathologic side | 58.4±10.7 |
Values are presented as the mean±standard deviation.
AC, air conduction; BC, bone conduction; ABG, air-bone gap.
The extent of the inferior displacement of the mastoid tegmen on the pathologic side was significantly higher than on the unaffected side (*P<0.05) and air conduction according to pure tone audiometry on the pathologic side was significantly higher than on the unaffected side (***P<0.001).